go-grpc-server

proto file

syntax = "proto3";

package apiService;

service apiService {
    rpc apiTrans(Request) returns (Response) {}
}

message Request {
    string value = 1;
}

message Response {
    string value = 1;
}

source code

package main

import (
	"context"
	"google.golang.org/grpc"
	"google.golang.org/grpc/reflection"
	"log"
	"net"
	pb "rpcServer/rpc_api"
)

const (
	port = ":52061"
)

type server struct{}

// SayHello implements helloworld.GreeterServer
func (s *server) ApiTrans(ctx context.Context, in *pb.Request) (*pb.Response, error) {
	log.Println("receive: ",in.Value)
	return &pb.Response{Value:in.Value},nil
}

func RpcServe() {
	listen, err := net.Listen("tcp", port)
	if err != nil {
		log.Fatalf("failed to listen: %v", err)
	}
	s := grpc.NewServer()
	pb.RegisterApiServiceServer(s, &server{})
	// Register reflection service on gRPC server.
	reflection.Register(s)
	if err := s.Serve(listen); err != nil {
		log.Fatalf("failed to serve: %v", err)
	}
}

func main() {
	RpcServe()
}